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Nondestructive characterization of the level of plastic deformation by thermoelectric power measurements in cold-rolled Ti-6Al-4V samples.

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Title: Nondestructive characterization of the level of plastic deformation by thermoelectric power measurements in cold-rolled Ti-6Al-4V samples.
Authors: Carreon, H.1 (AUTHOR) hcarreon@zeus.umich.mx, Medina, A.1 (AUTHOR)
Source: Nondestructive Testing & Evaluation. Dec2007, Vol. 22 Issue 4, p299-311. 13p. 2 Black and White Photographs, 2 Diagrams, 1 Chart, 6 Graphs.
Subjects: Electricity experiments, Thermoelectricity, Thermal electromotive force, Anisotropy, Plastics
Abstract: This paper presents experimental data that illustrates the intrinsic sensitivity of the thermoelectric contact technique based on the Seebeck effect, in order to detect the presence of anisotropy due to plastic deformation produced by the manufacturing process of cold working at different degrees of reduction in thickness, namely 40, 60 and 80% in Ti-6Al-4V. In addition to the morphological anisotropy, the Ti-6Al-4V alloy also exhibits a substantial thermoelectric anisotropy due to the preferred alignment of the predominantly hexagonal grain structure. The results describe the behaviour of the thermoelectric power (TEP) coefficient with respect to the anisotropy and microstructure in a highly textured material, that presents both morphological and crystallographic texture. Ultrasonic measurements of shear wave velocity were also conducted in order to obtain a direct correlation between the presence of a significant anisotropy in the cold-rolled Ti-6Al-4V samples and the TEP measurements, before and after heat treatment (annealing). TEP measurements offer a means to assess the evolution of the level of plastic deformation, which allows for a better correlation between texture-induced anisotropy and the material's microstructural and properties. Of course, the TEP values depend on the physical nature and degree of the imperfection that is to be characterized. [ABSTRACT FROM AUTHOR]
Copyright of Nondestructive Testing & Evaluation is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Nondestructive characterization of the level of plastic deformation by thermoelectric power measurements in cold-rolled Ti-6Al-4V samples.
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  Data: <searchLink fieldCode="AR" term="%22Carreon%2C+H%2E%22">Carreon, H.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> hcarreon@zeus.umich.mx</i><br /><searchLink fieldCode="AR" term="%22Medina%2C+A%2E%22">Medina, A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Nondestructive+Testing+%26+Evaluation%22">Nondestructive Testing & Evaluation</searchLink>. Dec2007, Vol. 22 Issue 4, p299-311. 13p. 2 Black and White Photographs, 2 Diagrams, 1 Chart, 6 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Electricity+experiments%22">Electricity experiments</searchLink><br /><searchLink fieldCode="DE" term="%22Thermoelectricity%22">Thermoelectricity</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+electromotive+force%22">Thermal electromotive force</searchLink><br /><searchLink fieldCode="DE" term="%22Anisotropy%22">Anisotropy</searchLink><br /><searchLink fieldCode="DE" term="%22Plastics%22">Plastics</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This paper presents experimental data that illustrates the intrinsic sensitivity of the thermoelectric contact technique based on the Seebeck effect, in order to detect the presence of anisotropy due to plastic deformation produced by the manufacturing process of cold working at different degrees of reduction in thickness, namely 40, 60 and 80% in Ti-6Al-4V. In addition to the morphological anisotropy, the Ti-6Al-4V alloy also exhibits a substantial thermoelectric anisotropy due to the preferred alignment of the predominantly hexagonal grain structure. The results describe the behaviour of the thermoelectric power (TEP) coefficient with respect to the anisotropy and microstructure in a highly textured material, that presents both morphological and crystallographic texture. Ultrasonic measurements of shear wave velocity were also conducted in order to obtain a direct correlation between the presence of a significant anisotropy in the cold-rolled Ti-6Al-4V samples and the TEP measurements, before and after heat treatment (annealing). TEP measurements offer a means to assess the evolution of the level of plastic deformation, which allows for a better correlation between texture-induced anisotropy and the material's microstructural and properties. Of course, the TEP values depend on the physical nature and degree of the imperfection that is to be characterized. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Nondestructive Testing & Evaluation is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1080/10589750701546960
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      – Code: eng
        Text: English
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        PageCount: 13
        StartPage: 299
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      – SubjectFull: Electricity experiments
        Type: general
      – SubjectFull: Thermoelectricity
        Type: general
      – SubjectFull: Thermal electromotive force
        Type: general
      – SubjectFull: Anisotropy
        Type: general
      – SubjectFull: Plastics
        Type: general
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      – TitleFull: Nondestructive characterization of the level of plastic deformation by thermoelectric power measurements in cold-rolled Ti-6Al-4V samples.
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            NameFull: Carreon, H.
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              M: 12
              Text: Dec2007
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              Y: 2007
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